package com.lky.util;

import javax.servlet.http.HttpServletRequest;

/**
 * Created by Lenovo on 2018/1/8.
 * 工具类，获取Http参数
 */
public class HttpServletRequestUtil {
    public static int getInt(HttpServletRequest request,String key){
        try{
            return Integer.decode(request.getParameter(key));
        }catch(Exception e){
            return -1;
        }
    }

    public static long getLong(HttpServletRequest request,String key){
        try{
            return Long.valueOf(request.getParameter(key));
        }catch(Exception e){
            return -1;
        }
    }

    public static Double getDouble(HttpServletRequest request,String key){
        try{
            return Double.valueOf(request.getParameter(key));
        }catch(Exception e){
            return -1d;
        }
    }
    public static Boolean getBoolean(HttpServletRequest request,String key){
        try{
            return Boolean.valueOf(request.getParameter(key));
        }catch(Exception e){
            return false;
        }
    }
    public static String getString(HttpServletRequest request,String key){
        try{
            String result = request.getParameter(key);
            if(result != null){
                result = result.trim();
            }
            if("".equals(result)){
                result = null;
            }
            return result;
        } catch (Exception e){
            return null;
        }
    }





}
